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. Author manuscript; available in PMC: 2015 Sep 11.
Published in final edited form as: J Adolesc Health. 2010 Sep 15;48(3):247–252. doi: 10.1016/j.jadohealth.2010.07.004

Figure 2.

Figure 2

*p ≤ .05, ** p ≤ .01, *** p ≤ .001

a Estimated total effect

b Controlling for study site, ethnicity, gender, family smoking at age 16, and family income at age 16

c Controlling for study site, ethnicity, and gender